A CIRM-funded therapy for a deadly blood cancer gets approval for Phase 3 clinical trial

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Michael Wang, MD (right) of the Department of Lymphoma & Myeloma at MD Anderson Cancer Center will lead the Phase 3 clinical

Oncternal Therapeutics, Inc. is celebrating an encouraging milestone at the start of the new year following a successful End-of-Phase 2 meeting with the FDA. 

Specifically, the FDA agreed on key elements of the company’s potentially pivotal Phase 3 clinical trial of zilovertamab, which offers potential treatment advantages to patients suffering from relapsed or refractory mantle cell lymphoma (MCL). Zilovertamab (previously called cirmtuzumab because it was developed with CIRM fundingis the company’s investigational anti-ROR1 monoclonal antibody. 

Mantle cell lymphoma is an aggressive form of blood cancer that develops when white blood cells, which are a key component of our immune system and help fight infections, grow out of control. 

The California Institute for Regenerative Medicine (CIRM) funded an earlier-stage trial conducted by Oncternal Therapeutics in collaboration with UC San Diego. 

The Phase 3 clinical trial will be led by Dr. Michael Wang, of the Department of Lymphoma & Myeloma at MD Anderson Cancer Center. The trial will randomize patients with relapsed or refractory MCL who have experienced stable disease or a partial response after receiving four months of oral ibrutinib therapy to receive either blinded zilovertamab or placebo. All patients will continue receiving oral ibrutinib.  

The study (ZILO-301) will be conducted internationally in at least 50 centers experienced in treating MCL, and is expected to begin in the second quarter of 2022.  

The researchers hope the treatment will lead to progression-free survival for patients getting zilovertamab and that this will lead to FDA approval of the therapy. 

The company is also planning to conduct study ZILO-302, an open-label companion study of zilovertamab plus ibrutinib for patients who have progressive disease during the initial four months of ibrutinib monotherapy from Study ZILO-301. 

Read the full release of the study here and be sure to follow the Stem Cellar blog for more updates on the clinical trial.  

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